ISRO Conducts Orbit Raising Feat for GSAT-6

Indian space agency ISRO on Friday conducted the first orbit raising feat on its successfully launched communication satellite GSAT-6, a day after its launch on Thursday.

“The first orbit raising operation of GSAT-6 was successfully completed by firing the Apogee Motorgsat3 for 3,385 seconds at 8.35 hrs (local time) on August 28,” said the Indian Space Research Organization.

The current orbit is 8,408 km (perigee height) by 35, 708 km (apogee height) with an inclination of 7.5 degree and an orbital period of 13 hours, 15 minutes and 24 seconds, said the statement of ISRO.

On Thursday, the GSAT-6 was launched on board the GSLV-D6 rocket from Sriharikota, which is 9th flight of the GSLV and the 3rd flight using a cryogenic engine by ISRO.

The GSAT-6, measuring 49.1 meters tall weighing 416 tons, has carried several science and strategic applications. the new feat on friday enables ISRO to orbit the 2,117 kg GSAT-6 communication satellite in the geosynchronous orbit.

GSAT-6 is the 25th geostationary communication satellite of India and 12th in the GSAT series. Five of its predecessors were launched by GSLV during 2001, 2003, 2004, 2007 and 2014 respectively.

GSAT-6 provides communication through five spot beams in S-band and a national beam in C-band for strategic and defence users. The cuboid shaped GSAT-6 has a lift-off mass of 2117 kg. Of this, propellants weigh 1132 kg and the dry mass of the satellite is 985 kg.

One of the advanced features of GSAT-6 satellite is its S-Band Unfurlable Antenna of 6 m diameter, which is the largest satellite antenna manufactured by ISRO using five spot beams over the Indian main land. The spot beams exploit the frequency reuse scheme to increase frequency spectrum utilisation efficiency. The other advanced feature of the satellite is the 70 V bus, which is flying first time in an Indian communication satellite.

With its successful orbit raising by the ISRO’s Master Control Facility (MCF) at Hassan, the satellite is placed in the circular Geostationary Orbit. After this, deployment of the antenna and three axis stabilisation of the satellite will be performed. GSAT-6 will be positioned at 83 deg East longitude.


Launch Mass: 2117 kg
Dimension: 2.1 x 2.5 x 4.1
Launched On: Thursday, August 27, 2015
Mission Life: 9 years
Power: Generated power 3100 W



GSAT-6 takes off on Thursday (ISRO)

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